Nilfisk-ALTO Scrubtec 337.2 (Vantage

Scrubtec 337.2 - Vantage 14

2013-05 Form No. 9099961000

Service Manual

Nilsk-ALTO Scubtec 337.2, 9087343020

Clarke Vantage 14, 9087345020

English

Table of Contents 2Service Manual – Scrubtec 337.2 / Vantage 14

Table of Contents

General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Machine General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Service Manual Purpose and Field of Application . . . . . . . . . . . . . . . . . . . . . . 4

Other Reference Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Service and Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Visible Symbols on the Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

General Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Machine Lifting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Machine Transportation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Machine Nomenclature (know your machine) . . . . . . . . . . . . . . . . . . . . . . . . 9

Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Service and Diagnostic Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Scheduled Maintenance Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Chassis System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Frame (main parts). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Maintenance and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

General Wiring Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Recovery System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Maintenance and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Scrub System, Disc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Table of Contents 3Service Manual – Scrubtec 337.2 / Vantage 14

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Maintenance and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

Solution System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

Squeegee System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Maintenance and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Wheel System, Non-Traction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

General Information

4

Service Manual – Scrubtec 337.2 / Vantage 14

General Information

Machine General Description

The Scubtec 337.2 is a “walk behind” industrial machine designed to wash and dry oors in one pass. The ma-

chine is powered by on-board batteries. The machine is equipped with disc brushes, a controlled solution ow

dosing system and a squeegee with blades integrated in the deck, which vacuums and dries the oor.

Service Manual Purpose and Field of Application

The Service Manual is a technical resource intended to help service technicians when carrying out mainte-

nance and repairs on the SC351, to guarantee the best cleaning performance and a long working life for the

machine.

Please read this manual carefully before performing any maintenance and repair procedure on the machine.

Other Reference Manuals

Model Product Code User Manual Spare Parts List

Nilsk Alto Scrubtec 337.2 9087343020 9099872000 9099873000

Clarke Vantage 14 9087345020 9099878000

These manuals are available at:

• Local Nilsk-Alto or Clarke retailer

• website: www.nilsk-alto.com - www.clarke-us.com

General Information

5

Service Manual – Scrubtec 337.2 / Vantage 14

Conventions

Forward, backward, front, rear, left or right are intended with reference to the operator’s position, that is to

say in driving position.

Service and Spare Parts

Service and repairs must be performed only by authorised personnel or Nilsk Alto / Clarke Service Centers.

The authorised personnel is trained directly at the manufacturer’s premises and has original spare parts and

accessories.

Contact Nilsk Alto / Clarke Retailer indicated below for service or to order spare parts and accessories, speci-

fying the machine model and serial number.

(Apply Retailer label here)

Serial Number Label

The machine serial number and model name are

marked on the plate (see the example to the side).

Product code and year of production are marked on

the same plate.

This information is useful when requiring machine

spare parts. Use the following table to write down

the machine identication data.

Battery 12 Vdc

Date code: .......

LpA = 64 dB(A)

Charg.100-240Vac 50/60Hz

Model: Scrubber-Dryer VANTAGE 14

Prod. Nr: 9087345020

GVW: 81 kg/180 lb

42 A

Serial No: ..................

IPX4

Type E Floor cleaning machine

2%

“Made in Hungary”

Nilfisk-Advance, Inc.

Plymouth, MN, USA

www.advance-us.com

ANSI/UL 583

CSA STD C22.2 N.68-92

3084826

Control Nr:

A Nilﬁsk-Advance Brand

P100771A

MACHINE model .............................................................................................

PRODUCT number ..........................................................................................

MACHINE serial number .................................................................................

General Information

6

Service Manual – Scrubtec 337.2 / Vantage 14

Safety

The following symbols indicate potentially dangerous situations. Always read this information carefully and

take all necessary precautions to safeguard people and property.

Visible Symbols on the Machine

WARNING!

Carefully read all the instructions before performing any operation on the machine.

WARNING!

Do not wash the machine with direct or pressurized water jets.

max.2%

WARNING!

Do not use the machine on slopes with a gradient exceeding the specications.

Symbols

Danger! It indicates a dangerous situation with risk of death for the operator.

Warning! It indicates a potential risk of injury for people or damage to objects.

Caution! It indicates a caution related to important or useful functions.

Note: It indicates a remark related to important or useful functions.

General Instructions

Specic warnings and cautions to inform about potential damages to people and machine are shown below.

Warning! Make sure to follow the safety precautions to avoid situations that may lead to

serious injuries.

− Before performing any cleaning, maintenance, repair or replacement procedure, turn the func-

tion selection knob to “0” and disconnect the battery connector.

− This machine must be used by properly trained operators only.

− Do not wear jewels when working near electrical components.

− Do not work under the lifted machine without supporting it with safety stands.

− Do not operate the machine near toxic, dangerous, ammable and/or explosive powders, liquids

or vapours: This machine is not suitable for collecting dangerous powders.

− Keep the battery away from sparks, ames and incandescent material. During the normal opera-

tion explosive gases are released.

− Battery charging produces highly explosive hydrogen gas. Keep the cover open during battery

charging and perform this procedure in well-ventilated areas and away from naked ames.

General Information

7

Service Manual – Scrubtec 337.2 / Vantage 14

Caution! Make sure to follow the safety precautions to avoid situations that may lead to

serious injuries, damages to materials or equipments.

− Carefully read all the instructions before performing any maintenance/repair procedure.

− Before using the battery charger, ensure that frequency and voltage values, indicated on the

machine serial number plate, match the electrical mains voltage.

− Do not pull or carry the machine by the battery charger cable and never use the battery charger

cable as a handle. Do not close a door on the battery charger cable, or pull the battery charger

cable around sharp edges or corners. Do not run the machine on the battery charger cable.

− Keep the battery charger cable away from heated surfaces.

− Do not use the machine if the battery charger cable or plug is damaged. If the machine is not

working as it should, has been damaged, left outdoors or dropped into water, return it to the

Service Center.

− To reduce the risk of re, electric shock, or injury, do not leave the machine unattended when

it is plugged in. Before performing any maintenance procedure, disconnect the battery charger

cable from the electrical mains.

− Do not smoke while charging the battery.

− Always protect the machine against the sun, rain and bad weather, both under operation and

inactivity condition. Store the machine indoors, in a dry place: This machine must be used in dry

conditions, it must not be used or kept outdoors in wet conditions.

− Before using the machine, close all doors and/or covers as shown in the User Manual.

− This machine is not intended for use by persons (including children) with reduced physical,

sensory or mental capabilities, or lack of experience and knowledge, unless they have been given

supervision or instruction concerning use of the machine by a person responsible for theyr safety.

− Children should be supervised to ensure that they do not play with the machine.

− Close attention is necessary when used near children.

− Use only as shown in this Manual. Use only Nilsk Alto / Clarke recommended accessories.

− Check the machine carefully before each use, always check that all the components have been as-

sembled before use. If the machine is not perfectly assembled it can cause damages to people and

properties.

− Take all necessary precautions to prevent hair, jewels and loose clothes from being caught by the

machine moving parts.

− Pay attention to the machine moving parts. When using the machine, the deck can abruptly turn

by 180°.

− Do not use the machine on an incline.

− Do not tilt the machine more than the angle indicated on the machine itself, in order to prevent

instability.

− Do not use the machine in particularly dusty areas.

− Use the machine only where a proper lighting is provided.

− While using this machine, take care not to cause damage to people or objects.

− Do not bump into shelves or scaffoldings, especially where there is a risk of falling objects.

− Do not lean liquid containers on the machine, use the relevant can holder.

− The machine operating temperature must be between +32°F and 104°F (0°C and +40°C).

− The machine storage temperature must be between +32°F and 104°F (0°C and +40°C).

− The humidity must be between 30% and 95%.

General Information

8

Service Manual – Scrubtec 337.2 / Vantage 14

− When using oor cleaning detergents, follow the instructions on the labels of the detergent bot-

tles.

− To handle oor cleaning detergents, wear suitable gloves and protections.

− Do not use the machine as a means of transport.

− Do not allow the brush to operate while the machine is stationary to avoid damaging the oor.

− In case of re, use a powder re extinguisher, not a water one.

− Do not tamper with the machine safety guards and follow the ordinary maintenance instructions

scrupulously.

− Do not allow any object to enter into the openings. Do not use the machine if the openings are

clogged. Always keep the openings free from dust, hairs and any other foreign material which

could reduce the air ow.

− Do not remove or modify the plates afxed to the machine.

− This machine cannot be used on roads or public streets.

− Pay attention during machine transportation when temperature is below freezing point. The

water in the recovery tank or in the hoses could freeze and seriously damage the machine.

− Use brushes and pads supplied with the machine or those specied in the User Manual. Using

other brushes or pads could reduce safety.

− In case of machine malfunctions, ensure that these are not due to lack of maintenance. If neces-

sary, request assistance from the authorised personnel or from an authorised Service Center.

− If parts must be replaced, require ORIGINAL spare parts from an Authorised Dealer or Retailer.

− To ensure machine proper and safe operation, the scheduled maintenance shown in the relevant

chapter of this Manual, must be performed by the authorised personnel or by an authorised Ser-

vice Center.

− Do not wash the machine with direct or pressurised water jets, or with corrosive substances.

− The machine must be disposed of properly, because of the presence of toxic-harmful materials

(battery, etc.), which are subject to standards that require disposal in special centres (see Scrap-

ping chapter).

Machine Lifting

Warning! Do not work under the lifted machine without supporting it with safety stands.

Machine Transportation

Warning! Before transporting the machine, make sure that:

All covers are closed.

The battery is disconnected.

The machine is securely fastened to the means of transport.

General Information

9

Service Manual – Scrubtec 337.2 / Vantage 14

Machine Nomenclature (know your machine)

Tanks assembly

(solution tank and recovery tank)

Handlebar with

control panel

Battery charger

cable

Can holder

Accessory and battery

compartment cover (closed)

Solution tank filler plug

Vacuum system

motor

Rear wheels

on fixed axle

Brush deck gearmotor

Brush deck wheels

Squeegee vacuum hose

Transparent cover with vacuum grid

Vacuum grid with

automatic shut-off float

Brush/pad-holder deck

Deck bumper

wheels

Squeegee

Squeegee blades

assembly

GEL/AGM

battery

Battery charger

Accessory and battery

compartment cover

(open)

Cover latch

Serial number plate/

technical data/

conformity certification

Fuses

Battery charger

cable holder

Brush rotation direction

Battery

connection

connector

P100772A

General Information

10

Service Manual – Scrubtec 337.2 / Vantage 14

Control Panel

Scrubbing and drying program: Brush activation

- Vacuum system activation

- Solution flow activation

Machine switching off “0”

Handlebar inclination adjusting lever

Brush levers

Solution flow switch

Machine start-up

enabling push-button

Program selection knob/rotary switch

Scrubbing program:

brush - solution flow activation

Drying program:

brush - vacuum system activation

Brush levers

Battery charge LED indicators

P100773A

General Information

11

Service Manual – Scrubtec 337.2 / Vantage 14

Service and Diagnostic Equipment

Besides a complete set of standard meters, the following instruments are necessary to perform fast checks and

repairs on Nilsk Alto / Clarke machines:

• Laptop computer charged with the current version of EzParts, Adobe Reader and (if possible) Internet

connection

• Digital Volt Meter (DVM)

• Amp clamp with possibility of making DC measurements

• Hydrometer

• Battery charge tester to check 12 V batteries

• Static control wrist strap

• Dynamometric wrench set

• A copy of the User Manual and Spare Parts List of the machine to be serviced (provided with the machine

or available at www.advance-us.com or other Nilsk Alto / Clarke websites).

The following equipment is also available at Nilsk Alto / Clarke Centers:

• Vacuum water lift gauge, P/N 56205281

General Information

12

Service Manual – Scrubtec 337.2 / Vantage 14

Technical Data

Description

Nilsk Alto

SCRUBTEC 337.2

Clarke

VANTAGE 14

Solution tank capacity 2,9 USgal (11 litri)

Recovery tank capacity 3,2 USgal (12 litri)

Min/max machine length at the handlebar 31.9 in / 50 in (810 mm / 1270 mm)

Machine width 18.5 in (470 mm)

Min/max machine height with adjustable handlebar 21.6 / 39.4 in (550 / 1000 mm)

Minimum turning radius 21.6 in (550 mm)

Cleaning width 14.5 in (370 mm)

Diameter of wheels on xed axle 8.4 in (214 mm)

Wheel pressure on the oor (*) 87 psi (0,6 N/mm

2

)

Brush/pad diameter 14.5 in (370 mm)

Brush/pad pressure on the oor 46 lb (21 Kg)

Brush/pad pressure with full tank 66 lb (30 Kg)

Min/max solution ow

One drop: 0.066 gpm (0.25 litres/min)

Two drops: 0.13 gpm (0.5 litres/min)

Sound pressure level at workstation (ISO 11201, ISO 4871, EN 60335-2-72)

(LpA)

64 dB(A) ± 3 dB(A)

Machine sound pressure level (ISO 3744, ISO 4871, EN 60335-2-72) (LwA)

84 dB(A)

Vibration level at the operator’s arms (ISO 5349-1, EN 60335-2-72)

98.4 in/s

2

(< 2.5 m/s

2

)

Maximum gradient when working 2%

IP protection class

X4

Protection class (electric)

III

Vacuum system motor power 0.27 hp (200 W)

Vacuuming (with closed inlet) 27.7 in/H

2

O (710 mmH

2

O)

Brush motor power 0.35 hp (260 W)

Brush motor speed 140 rpm

Total absorbed power 42 A (0.5 kW)

Battery compartment size 17.8x6.9x9.4 in (350x175x240 mm)

Battery voltage 12 V

Standard battery 12V 55AhC20 AGM spiracell 12V 84AhC5 AGM

Battery charger 100-240 VAC

Work autonomy (standard battery) 2 hour 1 hour

Weight without battery and with empty tanks

97 lb (44 kg)

Gross vehicle weight (GVW) 179 lb (81 kg)

Shipping weight

159 lb (72 kg) 172 lb (78 kg)

(*) Machines have been tested under the following conditions:

◦ Battery maximum size

◦ Maximum brush and squeegee size

◦ Full clean water tank

◦ Optional equipment installed

◦ Wheel weight checked

◦ Print on the oor checked on cement for each single wheel

◦ Result expressed as maximum value for both front and rear wheels

General Information

13

Service Manual – Scrubtec 337.2 / Vantage 14

Dimensions

28.6 in - 726 mm

18.7 in - 475 mm

17 in - 432 mm

P100774A

General Information

14

Service Manual – Scrubtec 337.2 / Vantage 14

Maintenance

The lifespan of the machine and its maximum operating safety are ensured by correct and regular mainte-

nance.

Warning! Read carefully the instructions in the Safety chapter before performing any

maintenance procedure.

The following tables provides the scheduled maintenance. The intervals shown may vary according to particu-

lar working conditions, which are to be dened by the person in charge of the maintenance.

For instructions on maintenance procedures, see the following paragraphs.

Scheduled Maintenance Table

Procedure

Daily, after using the

machine

Weekly

Every six

months

Yearly

Battery charging

Squeegee Cleaning

Brush Cleaning

Tank and Vacuum Grid Cleaning

Squeegee blade check and/or replacement

Solution valve check and cleaning

Brush deck rotation clutch check and/or replacement

(Only for Clarke Vantage 14)

Chassis System 15Service Manual – Scrubtec 337.2 / Vantage 14

Chassis System

Frame (main parts)

1. Frame

2. Handlebar holder

3. Wheels on xed axle

1

2

3

P100775

Control System 16Service Manual – Scrubtec 337.2 / Vantage 14

Control System

Functional Description

The function control is performed with the program

selection knob/rotary switch (SW1), the machine

start-up enabling push-button (SW2) (which can be

used simultaneously with the brush levers) and the

solution ow switch (SW3).

The switch outputs controls the relevant outputs: re-

lay (K1) for brush motor, relay (K2) for vacuum sys-

tem motor, solenoid valve (EV).

The control circuit are protected by the fuse (F3).

The negative output of the battery charger (B2) al-

lows function activation when battery level is suf-

cient and the battery charger is not connected to the

electrical mains.

The LED electronic board (EB1) is equipped with 3

LEDs which indicate the battery charge level, both

during operation and while recharging:

Battery charge level

LED display

Diagram of Output Activation according to the Position of the Switches (SW1), (SW2)

and (SW3)

Program selection knob/

rotary switch (SW1)

settings

Machine start-up

enabling push-button

(SW2) settings (with

brush activation levers)

Brush motor (M1) Solenoid valve (EV) Vacuum system motor

(M2)

O

Pressed/released Off Off Off

Released Off Off On

Pressed On On On

Released Off Off Off

Pressed On On Off

Released/ Off Off On

Pressed On Off On

Solution ow push-button setting (SW3) Symbols Solenoid valve ON time

(EV)

Solenoid valve OFF time

(EV)

0

2 sec 2 sec

1

Always ON -

Control System 17Service Manual – Scrubtec 337.2 / Vantage 14

Component Locations

• Handlebar with control panel

• Program selection knob/rotary switch (SW1)

• LED electronic board (EB1)

• Brush levers

• Machine start-up enabling push-button (SW2)

• Solution ow push-button (SW3)

• Wiring harness

• Handlebar inclination adjusting lever

Handlebar with control

panel

Solution ow switch

(SW3)

Machine start-up

enabling push-button

(SW2)

Program selection

knob/rotary switch

(SW1)

Wiring harness

LED electronic board

(EB1)

Handlebar inclination

and height adjusting

lever

Brush levers

P100777A

Control System 18Service Manual – Scrubtec 337.2 / Vantage 14

Removal and Installation

LED Electronic Board (EB1) Disassembly/Assembly

Disassembly

1. Drive the machine on a level oor. Make sure

that the machine cannot move independently.

2. Turn the machine program selection knob to “0”.

3. Disconnect the battery connector.

4. On the lower side of the handlebar with the

control panel, unscrew the screws (A).

5. Lower the upper side (B) of the handlebar with

the control panel.

6. Disconnect the connector (C) of the LED

electronic board (D). Remove the screws (E) and

remove the LED electronic board (D).

7. If necessary, disconnect the connector (F) and

remove the solution ow push-button (G) by

disengaging the inner tabs (H).

B

A

C

F

E

D

E

H

G

P100778A

Control System 19Service Manual – Scrubtec 337.2 / Vantage 14

LED Electronic Board (EB1) Disassembly/Assembly (Continues)

8. If necessary, remove the selector assembly (N) of the machine program selection knob (I), as shown

below:

• Disconnect the connectors (J)

• On the outer side, turn the knob (I) on the position (K) (vacuum system activation).

• Loosen the threaded dowel inside the housing (L), then remove the knob (I) from the housing.

• Remove the screws (M) and, from the inside, remove the selector assembly (N) of the knob (I).

Assembly

9. Assemble the components in the reverse order of disassembly.

I

M

L

K

J

N

J

P100779A

Control System 20Service Manual – Scrubtec 337.2 / Vantage 14

Machine Enabling Push-Button Disassembly/Assembly (SW2)

Disassembly

1. Drive the machine on a level oor. Make sure that the machine cannot move independently.

2. Turn the machine program selection knob to “0”.

3. Disconnect the battery connector (red).

4. On the lower side of the handlebar with the control panel, unscrew the screws (A).

5. Move the upper side (B) of the handlebar with the control panel.

6. Remove the screws (C) and move the lower side (D) of the handlebar from the frame (E).

7. Disconnect the connectors (F) of the brush enabling push-button (G).

8. Remove the screws (H) and remove the switch (G).

9. If necessary, remove from the housing the enabling push-button (I) of the switch (G).

10. If necessary, remove the brush levers (J) from the housing.

Assembly

11. Assemble the components in the reverse order of disassembly.

A

B

C

D

E

I

H

J

F

G

F

J

P100780A

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Nilfisk-ALTO Scrubtec 337.2 (Vantage - 14) User manual

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Nilfisk-ALTO Scrubtec 337.2 (Vantage - 14) User manual

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